Improved Metal Recovery
ECO-KILN® system is an option to more conventional pretreatment lines where the dryer incorporates two (2) main components a rotary kiln and afterburner. One burner is employed and serves both as chips dryer and fume incinerator and hence improves thermal efficiency. This dual function combined with the heat source of the combustible coolant results in extremely low specific energy consumption.
An additional safety benefit of the ECO-KILN® is the avoidance of the hermit reaction on drying from short run of ductwork. The short routing of the ductwork work from the kiln to the stack also reduces improves radiation losses.
Fume is reduced and it is not necessary collect fumes in the sink vortex melting area.
All waste gases are discharged directly via a vertical stack chimney.
The success of any melting system depends on the physical characteristics and nature of the feedstock, therefore, the integration of durable, efficient pre-treatment equipment is crucial in achieving full processing efficiency and hence, a high metal recovery and payback in small sizes up to 300 kg/hr.
This is particularly important when recycling the machining chips, which have a high surface area per unit volume. Even small residues of water-soluble fluid will have a significant impact on metal recovery. Our many proven case references demonstrate that materials suitably dried, graded and without finds or ageing produce an extremely high metal recovery.
Assumed that the Aluminium chips are collected from the machining operation and centrifuged to reduce the content of the soluble water and organic residues to <5%.